{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["message topic", "else", "cause effect", "instrument agency"], "input": "guitars are played acoustically ; the tone is produced by the vibration of the strings which is amplified by the body of the guitar , which acts as a large hollow resonating chamber , or they may rely on an amplifier that can electronically manipulate tone ."}
{"message topic": [], "else": [], "cause effect": [{"subject": "tone", "object": "vibration"}], "instrument agency": []}